first:i dont know how to thank you for your suggestions :)
second:i will add a mode (based on your suggestion) that you cant shoot,the map is way bigger and enemies spawn less(like only 5 enemy spawn at the start and none spawn later) and fix the mining bug that your are on it but it dont mine and i will make another mode which you can shoot but the map is really really bigger and there will be a shop and health pickups (and i will make sure you dont get stuck or your bullet dont get stuck in a way that you cant shooy)
sorry if the game is bad now
i just learned how to use unity 3 months ago and it was my frst jam